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EP1073493A1 - Appareil de ventilation - Google Patents

Appareil de ventilation

Info

Publication number
EP1073493A1
EP1073493A1 EP99945719A EP99945719A EP1073493A1 EP 1073493 A1 EP1073493 A1 EP 1073493A1 EP 99945719 A EP99945719 A EP 99945719A EP 99945719 A EP99945719 A EP 99945719A EP 1073493 A1 EP1073493 A1 EP 1073493A1
Authority
EP
European Patent Office
Prior art keywords
pump
membrane
container
pull means
toothed belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99945719A
Other languages
German (de)
English (en)
Inventor
Björn WENNERHOLM
Rolf Svensson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Barnwell Investments SA
Original Assignee
Barnwell Investments SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Barnwell Investments SA filed Critical Barnwell Investments SA
Publication of EP1073493A1 publication Critical patent/EP1073493A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/041—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms double acting plate-like flexible pumping member
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/006—Tidal volume membrane pumps

Definitions

  • the present invention relates to a portable apparatus for ventilation support to persons with respiratory distress, with a compressed air pump which may be connected to the mouth or the nose via tube means for generation of pressure pulses with an individually adaptable air volume, which pump comprises a rigid container consisting of two symmetrical halves and with a flexible membrane which is located as a laterally reciprocating diaphragm between the two container halves, that are provided with check valves permitting ambient air to be fed into the pump and from the pump into the tube means while the membrane wall is moved, for generation of a pressure pulse.
  • Prior art in the field of breathing aids comprises portable units and non-portable units that, if required, may be moved inside a hospital or be used within an ambulance, but may not be comfortably carried when travelling, thereby fulfilling the criteria of being classed as portable.
  • apparatuses are available that provide oscillatory pulse types, IPPV, which apparatuses are heavy and expensive.
  • Conventional breathing aids for the above described area of use often comprise a fan which creates a static overpressure, which is aimed to open and to ventilate the respiratory system of the user.
  • membrane pumps have particularly been used on stationary apparatuses for spray painting, because they are normally very space consuming in comparison with fans and piston or accordion pumps.
  • the air requirement during sleep for the age of 18-80 years is about 7 litres per minute, for example the equivalent to 1 respiration of 0,6 litre every fifth second, while small children may respire about 30 times per minute with a corresponding smaller tidal volume. Accordingly, a breathing apparatus must have a relative wide capacity for adjustment, in order to cover occurring needs. This is difficult to achieve for single-action pumps.
  • the object of the present invention is to provide a space-saving and simple apparatus which solves or at least reduces the above described problems .
  • the invention is characterized in that the pump is provided with flexible pull means for reciprocating operation of the membrane in the container, said pull means extending via pulley wheels to a driving device located substantially in the same plane as the container and beside it . Because of this configuration of the invention, it is possible to use an efficient operating and power saving double action membrane pump.
  • the respiration apparatus provides for a comprehensive ventilation support wherever the patient is, owing to that it is designed for fulfilling the following demands: a) low weight b) small dimensions, to be able to fit inside cabin luggage c) low power consumption d) be equipped with internal, chargable storage battery, e) possibility to operate from 220 V 50 Hz AC-mains f) alternatively 12/24 V direct-current battery g) simple to adjust and use h) dependable in service i) low sound level j ) low manufacturing cost
  • the apparatus comprises a pump with a rigid container consisting of two symmetrical container halves 4 manufactured from plastic or aluminium.
  • a membrane 5 of a flexible material is mounted between the two container halves and is provided with a central stiffener 11.
  • the thus formed pump housing is rigidly attached to the base plate 16 which also carries a drive motor 9 and pendulum barrel 7 via a bearing bracket 2.
  • Pull means 6 are mounted at the respective side of the stiffener 11, in such a manner that each pull means extends through an opening in the respective container half 4, to which opening a guide-rail 10 connects sealingly.
  • the pull means may for example comprise toothed belts extending via pulley wheels 1 to openings at the outer ends of the guide-rails. These openings have substantially the same shape as the cross section of the toothed belt forming sealing segments having a certain length, for providing sealing against the toothed belt along a corresponding longitudinal section.
  • the drive motor 9 turns the pendulum barrel 7 in a reciprocating motion, and the length of these movements is defined by adjustably arranged limit switches 12 that reverses the current supply of the drive motor via a relay 14.
  • the frequency of the movement is defined by an adjustable time relay 15.
  • Each container half 4 is provided with check valve controlled air inlets 18 and outlets 17 respectively, where the outlets 17 are interconnected at 8 to a mutual inspiration tube 8 (expiration from pump - inspiration to patient) .
  • the above described, compact built ventilator is preferably positioned below the bed and is connected to the electricity supply network via a 12 V DC battery eliminator, alternatively , 12 V socket when staying in a caravan/mobile home etc.
  • a standard patient mask with expiration valve is preferably positioned over the mouth and is connected to the air outlet 8.
  • a pre-set air volume is provided with a frequency which can be adapted to the age and weight of the patient.
  • the amplitude of the membrane depends upon the pre-set rotation angle of the pendulum barrel. A double action is achieved due to that a corresponding air volume which is delivered when the membrane moves in one direction, is at the same time drawn in at the opposite side of the membrane. As a consequence, separate intake phase is eliminated with an accompanying saving of energy, wear and time. The last point is important for high frequencies.
  • this may be connected to the drive motor 9 via a simple crankshaft for conversion of a rotating motion into a reciprocating motion.
  • the transmission i.e. the speed and transmission ratio of the drive motor determines the working frequency of the respiration apparatus. It has been found that the respiration rate of the human body can easily adapt to such a suitable working frequency .

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

L'invention concerne un appareil portable permettant d'aider la ventilation de personnes atteintes de difficultés respiratoires. Cet appareil est pourvu d'une pompe à air comprimé pouvant être accouplée à la bouche ou au nez par l'intermédiaire de tubes (8) afin de générer des impulsions de pression dont le volume d'air est adaptable en fonction des individus. Cette pompe comprend un réservoir rigide constitué par deux moitiés symétriques (4) et comportant une membrane souple (5) placée entre ces deux moitiés et jouant le rôle d'un diaphragme effectuant un déplacement alternatif latéral. Des clapets anti-retour permettent d'introduire de l'air ambiant dans la pompe, et d'introduire de l'air ambiant dans les tubes en provenance de la pompe, tandis que la paroi de la membrane se déplace, de manière à générer une impulsion de pression. La pompe est pourvue de moyens de traction souples (6) servant à entraîner la membrane (5) en déplacement alternatif dans le réservoir. Ces moyens de traction s'étendent par l'intermédiaire de roues de poulie (1) jusqu'à un dispositif d'entraînement (9) situé pratiquement dans le même plan que le réservoir et à côté de ce dernier.
EP99945719A 1998-04-23 1999-04-21 Appareil de ventilation Withdrawn EP1073493A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9801421 1998-04-23
SE9801421A SE510263C2 (sv) 1998-04-23 1998-04-23 ventilationsanordning
PCT/SE1999/000640 WO1999053984A1 (fr) 1998-04-23 1999-04-21 Appareil de ventilation

Publications (1)

Publication Number Publication Date
EP1073493A1 true EP1073493A1 (fr) 2001-02-07

Family

ID=20411063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99945719A Withdrawn EP1073493A1 (fr) 1998-04-23 1999-04-21 Appareil de ventilation

Country Status (8)

Country Link
US (1) US6397844B1 (fr)
EP (1) EP1073493A1 (fr)
CN (1) CN1297365A (fr)
AU (1) AU4299699A (fr)
BR (1) BR9909862A (fr)
SE (1) SE510263C2 (fr)
WO (1) WO1999053984A1 (fr)
ZA (1) ZA200006347B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110041852A1 (en) * 2009-08-21 2011-02-24 Bergman Robert T Ambu-bag automation system and method
US8534282B2 (en) 2009-08-21 2013-09-17 Columbus Oral And Maxillofacial Surgery P.S.C. Flexible self-inflating resuscitator squeeze bag automation device, system, and method
USD666299S1 (en) 2010-06-16 2012-08-28 Mobile Airways, Llc Ambu-bag squeezing device
WO2016096775A1 (fr) * 2014-12-19 2016-06-23 Koninklijke Philips N.V. Dispositif de purification d'air portable sur soi
CN104564639B (zh) * 2014-12-24 2016-06-15 深圳市理邦精密仪器股份有限公司 保护隔膜泵的方法及装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225758A (en) * 1959-12-30 1965-12-28 Morch Ernst Trier Piston type respirator
US3379194A (en) * 1965-06-29 1968-04-23 United Aircraft Corp Fluid amplifier controlled respirator
FR1525881A (fr) * 1966-02-04 1968-05-24 Machine pneumatique pour la production de mouvements alternatifs
US3549046A (en) * 1968-07-16 1970-12-22 Philip Morris Inc Molded plastic razor blade dispenser
FR2036765A1 (fr) * 1969-03-25 1970-12-31 Air Liquide
DE1917245A1 (de) 1969-04-03 1970-10-22 Oscar Rigamonti Membranpumpe,besonders fuer Inhalierapparate
JPS5039481B1 (fr) * 1971-02-12 1975-12-17
US4063825A (en) * 1975-06-06 1977-12-20 Centre D'etudes Et De Realisations Industrielles De L'atlantique C.E.R.I.A. Pumping apparatus particularly for oil wells
GB1558060A (en) * 1975-07-29 1979-12-19 Medishield Corp Ltd Lung ventilator
US4257415A (en) * 1979-05-07 1981-03-24 Howard Rubin Portable nebulizer treatment apparatus
US4409977A (en) * 1981-07-06 1983-10-18 Institute Of Critical Care Medicine High frequency ventillator
US4495947A (en) * 1982-09-23 1985-01-29 Imasco-Cdc Research Foundation High speed medical ventilator
JPH0694867B2 (ja) * 1986-11-26 1994-11-24 松下電工株式会社 電磁式エアポンプ
US5398676A (en) * 1993-09-30 1995-03-21 Press; Roman J. Portable emergency respirator
JPH0824337A (ja) * 1994-07-11 1996-01-30 Masaaki Inoue 高頻度人工呼吸器
GB2316323B (en) * 1996-06-20 1999-09-22 Aid Medic Ltd Dispensing system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9953984A1 *

Also Published As

Publication number Publication date
SE9801421L (sv) 1999-05-03
AU4299699A (en) 1999-11-08
CN1297365A (zh) 2001-05-30
WO1999053984A1 (fr) 1999-10-28
SE9801421D0 (sv) 1998-04-23
WO1999053984A8 (fr) 2000-11-16
BR9909862A (pt) 2000-12-19
ZA200006347B (en) 2002-02-06
US6397844B1 (en) 2002-06-04
SE510263C2 (sv) 1999-05-03

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